Mercury exhibited its one-of-a-kind Comet Super Cyclone at the 1964 Chicago show. The sleek fastback roof was custom and included a large wrap around back window, like the 1964-65 Plymouth Barracuda. Stylish European-style headlights were rectangular in shape, but illegal on U.S. highways at the time.

Found on https://www.facebook.com/groups/1631935880418477/?fref=nf and http://www.carstyling.ru/en/blog/